Update Telegram Bot API shield version in README.md (#934)

README.md

@@ -6,7 +6,7 @@
 [![PyPi status](https://img.shields.io/pypi/status/aiogram.svg?style=flat-square)](https://pypi.python.org/pypi/aiogram)
 [![Downloads](https://img.shields.io/pypi/dm/aiogram.svg?style=flat-square)](https://pypi.python.org/pypi/aiogram)
 [![Supported python versions](https://img.shields.io/pypi/pyversions/aiogram.svg?style=flat-square)](https://pypi.python.org/pypi/aiogram)
-[![Telegram Bot API](https://img.shields.io/badge/Telegram%20Bot%20API-6.0-blue.svg?style=flat-square&logo=telegram)](https://core.telegram.org/bots/api)
+[![Telegram Bot API](https://img.shields.io/badge/Telegram%20Bot%20API-6.1-blue.svg?style=flat-square&logo=telegram)](https://core.telegram.org/bots/api)
 [![Documentation Status](https://img.shields.io/readthedocs/aiogram?style=flat-square)](http://docs.aiogram.dev/en/latest/?badge=latest)
 [![Github issues](https://img.shields.io/github/issues/aiogram/aiogram.svg?style=flat-square)](https://github.com/aiogram/aiogram/issues)
 [![MIT License](https://img.shields.io/pypi/l/aiogram.svg?style=flat-square)](https://opensource.org/licenses/MIT)